金沙江下游溪洛渡-向家坝梯级生态调度研究

发布时间：2018-08-30 20:28

【摘要】：金沙江下游区域是我国重要的珍稀鱼类保护区,随着梯级电站的修建,势必将对生物的生存环境造成影响。为了减少负面的生态影响,利用年内展布法和改进FDC法计算了最小生态流量和适宜生态流量过程。根据不同的生态流量约束,设置了4种约束方案:(1)工程规划约束;(2)年内展布法计算的最小生态流量约束;(3)改进FDC法计算的最小生态流量约束;(4)改进FDC法计算的适宜生态流量约束。并对建立的生态调度模型进行求解,计算结果表明:当设置最小生态流量约束时,各典型年的发电量基本都能达到最大值;当设置适宜生态流量约束时,各典型年的发电量都有所减少。各方案的拟合优度的计算结果表明,在适宜生态流量约束条件下,水库的下泄流量更贴近天然的入库径流。
[Abstract]:The downstream area of Jinsha River is an important protected area of rare fish in China. With the construction of cascade power station, the living environment will be affected. In order to reduce the negative ecological impact, the minimum ecological flow and the suitable ecological flow process were calculated by using the annual distribution method and the improved FDC method. According to different ecological flow constraints, Four kinds of constraint schemes are set up: (1) engineering planning constraints; (2) minimum ecological flow constraints calculated by the annual expansion method; (3) minimum ecological flow constraints calculated by improved FDC method; (4) suitable ecological flow constraints calculated by improved FDC method. The calculation results show that when the minimum ecological flow constraint is set up, the power generation can basically reach the maximum value in each typical year, and when the appropriate ecological flow constraint is set up, the calculation results show that when the minimum ecological flow constraint is set up, the power generation can basically reach the maximum value in each typical year. Electricity generation has declined in each typical year. The results of the simulation results show that the lower discharge of the reservoir is closer to the natural inflow under the condition of the suitable ecological flow.
【作者单位】：武汉大学水资源与水电工程科学国家重点实验室;水资源安全保障湖北省协同创新中心;
【基金】：国家自然科学基金面上项目(51479140);国家自然科学基金重点项目(51239004)
【分类号】：TV697.1

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